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A model study of the Little Ice Age and beyond: changes in ocean heat content, hydrography and circulation since 1500

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Abstract

The Earth System Climate Model from the University of Victoria is used to investigate changes in ocean properties such as heat content, temperature, salinity, density and circulation during 1500 to 2000, the time period which includes the Little Ice Age (LIA) (1500–1850) and the industrial era (1850–2000). We force the model with two different wind-stress fields which take into account the North Atlantic Oscillation. Furthermore, temporally varying radiative forcings due to volcanic activity, insolation changes and greenhouse gas changes are also implemented. We find that changes in the upper ocean (0–300 m) heat content are mainly driven by changes in radiative forcing, except in the polar regions where the varying wind-stress induces changes in ocean heat content. In the full ocean (0–3,000 m) the wind-driven effects tend to reduce, prior to 1700, the downward trend in the ocean heat content caused by the radiative forcing. Afterwards no dynamical effect is visible. The colder ocean temperatures in the top 600 m during the LIA are caused by changes in radiative forcing, while the cooling at the bottom is wind-driven. The changes in salinity are small except in the Arctic Ocean. The reduced salinity content in the subsurface Arctic Ocean during the LIA is a result from reduced wind-driven inflow of saline water from the North Atlantic. At the surface of the Arctic Ocean the changes in salinity are caused by changes in sea–ice thickness. The changes in density are a composite picture of the temperature and salinity changes. Furthermore, changes in the meridional overturning circulation (MOC) are caused mainly by a varying wind-stress forcing; the additional buoyancy driven changes due to the radiative forcings are small. The simulated MOC is reduced during the LIA as compared to the industrial era. On the other hand, the ventilation rate in the Southern Ocean is increased during the LIA.

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References

  • Bitz CM, Holland MM, Weaver AJ, Eby M (2001) Simulating the ice-thickness distribution in a coupled climate model. J Geophys Res 106(C2):2441–2463

    Article  Google Scholar 

  • Bradley RS, Jones PD (eds) (1995) Climate Since A.D. 1500. Routledge

  • Broecker WS (2000) Was a change in thermohaline circulation responsible for the Little Ice Age? Proc Natl Acad Sci 97(4):1339–1342

    Article  Google Scholar 

  • Broecker WS, Sutherland S, Peng TH (1999) A possible 20th-century slowdown of Southern Ocean Deep Water formation. Science 286:1132–1135

    Article  Google Scholar 

  • Bryan K, Lewis LJ (1979) A water mass model of the world ocean circulation. J Geophys Res 84:2503–2517

    Article  Google Scholar 

  • Crowley TJ (2000) Causes of climate change over the past 1000 years. Science 289:270–277

    Article  Google Scholar 

  • Crowley TJ, Baum SK, Kim KY, Hegerl GC, Hyde WT (2003) Modeling ocean heat content changes during the last millennium. Geophys Res Lett 30(18). doi:10.1029/2003GL017801

  • Delworth TL, Greatbatch RJ (2000) Multidecadal thermohaline circulation variability driven by atmospheric surface flux forcing. J Clim 13:1481–1495

    Article  Google Scholar 

  • Delworth TL, Mann ME (2000) Observed and simulated multidecadal variability in the Northern Hemisphere. Clim Dyn 16:661–676

    Article  Google Scholar 

  • Delworth T, Manabe S, Stouffer R (1993) Interdecadal variations of the thermohaline circulation in a coupled ocean-atmosphere model. J Clim 6:1993–2011

    Article  Google Scholar 

  • Fanning AF, Weaver AJ (1996) An atmospheric energy-moisture balance model: climatology, interpentadal climate change, and coupling to an ocean general circulation model. J Geophys Res 101(D10):15,111–15,128

    Article  Google Scholar 

  • Gagan MK, Ayliffe LK, Beck JW, Cole JE, Druffel ERM, Dunbar RB, Schrag DP (2000) New views of tropical paleoclimates from corals. Quat Sci Rev 19:45–64

    Article  Google Scholar 

  • Gill AE (1982) Atmosphere–ocean dynamics. Academic Press, London

  • Grove JM (2004) Little ice ages: ancient and modern, Routledge studies in physical geography and environment, vol 5, 2nd edn. Routledge

  • Haug GH, Hughen KA, Sigman DM, Peterson LC, Röhl U (2001) Southward migration of the Intertropical Convergence Zone through the Holocene. Science 293:1304–1308

    Article  Google Scholar 

  • Hendy EJ, Gagan MK, Alibert CA, McCulloch MT, Lough JM, Isdale PJ (2002) Abrupt decrease in tropical Pacific sea surface salinity at end of Little Ice Age. Science 295:1511–1514

    Article  Google Scholar 

  • Holland MM, Bitz CM, Eby M, Weaver AJ (2001) The role of ice-ocean interactions in the variability of the North Atlantic thermohaline circulation. J Clim 14:656–675

    Article  Google Scholar 

  • Jones PD, Mann ME (2004) Climate over the past millennia. Rev Geophys 42. doi:10.1029/2003RG000143

  • Keigwin LD (1996) The Little Ice Age and Medieval warm period in the Sargasso Sea. Science 274(5292):1504–1508

    Article  Google Scholar 

  • Keigwin LD, Boyle EA (2000) Detecting Holocene changes in thermohaline circulation. Proc Natl Acad Sci 97(4):1343–1346

    Article  Google Scholar 

  • Kreutz KJ, Mayewski PA, Meeker LD, Twickler MS, Whitlow SI, Pittalwala II (1997) Bipolar changes in atmospheric circulation during the Little Ice Age. Science 277:1294–1296

    Article  Google Scholar 

  • Kushnir Y (1994) Interdecadal variations in North Atlantic sea surface temperature and associated atmospheric conditions. J Clim 7:141–157

    Article  Google Scholar 

  • Lamb HH (1985) Climatic history and the future. Princeton University Press, Princeton

  • Levitus S, Antonov J, Boyer T (2005) Warming of the world ocean, 1955–2003. Geophys Res Lett 32. doi:10.1029/2004GL021592

  • Lund DC, Lynch-Stieglitz J, Curry WB (2006) Gulf Stream density structure and transport during the past millennium. Nature 444:601–604, doi:10.1038/nature05277

    Article  Google Scholar 

  • Luterbacher J, Xoplaki E, Dietrich D, Jones PD, Davies TD, Portis D, González-Rouco JF, von Storch H, Gyalistras D, Casty C, Wanner H (2002a) Extending North Atlantic Oscillation reconstructions back to 1500. Atmos Sci Lett 2:114–124. doi:10.1006/asle.2001.0044

    Article  Google Scholar 

  • Luterbacher J, Xoplaki E, Dietrich D, Rickli R, Jacobeit J, Beck C, Gyalistras D, Schmutz C, Wanner H (2002b) Reconstruction of sea level pressure fields over the Eastern North Atlantic and Europe back to 1500. Clim Dyn 18:545–561. doi:10.1007/s00382-001-0196-6

    Google Scholar 

  • Marotzke J, Welander P, Willebrand J (1988) Instability and multiple steady states in a meridional-plane model of the thermohaline circulation. Tellus 40A(2):162–172

    Google Scholar 

  • Mosley-Thompson E (1995) Paleoenvironmental conditions in Antarctica since A.D. 1500: ice core evidence. In: Bradley RS, Jones PD (eds) Climate Since A.D. 1500, Routledge, Chap 29

  • Mysak LA, Wright KM, Sedláček J, Eby M (2005) Simulation of sea ice and ocean variability in the Arctic during 1955–2002 with an intermediate complexity model. Atmosphere–Ocean 43(1):101–118

    Google Scholar 

  • Newton A, Thunell R, Stott L (2006) Climate and hydrograohic variability in the indio-pacific warm pool during the last millennium. Geophys Res Lett 33. doi:10.1029/2006GL027234

  • Pacanowski R (1995) MOM 2 Documentation User’s Guide and Reference Manual, GFDL Ocean Group. Technical Report 3, NOAA, GFDL

  • Pfister C (1995) Monthly temperature and precipitation in central Europe 1525–1979: quantifying documentary evidence on weather and its effects. In: Bradley RS, Jones PD (eds) Climate Since A.D. 1500, Routledge, Chap 6

  • Rahmstorf S, England MH (1997) Influence of Southern Hemisphere winds on North Atlantic deep water flow. J Phys Oceanogr 27:2040–2054

    Article  Google Scholar 

  • Rogers JC (1983) Spatial variability of Antarctic temperature anomalies and their association with Southern Hemisphere atmospheric circulation. Ann Assoc Am Geogr 73(4):502–518

    Article  Google Scholar 

  • Saenko OA, Flato GM, Weaver AJ (2002) Improved representation of sea–ice processes in climate models. Atmosphere–Ocean 40(1):21–43

    Google Scholar 

  • Schlesinger ME, Ramankutty N (1994) An oscillation in the global climate system of period 65–70 years. Nature 367:723–726. doi:10.1038/367723a0

    Article  Google Scholar 

  • Sedláček J, Mysak LA (2008) Sensitivity of sea ice to wind-stress and radiative forcing since 1500: a model study of the Little Ice Age and beyond. Clim Dyn. doi:10.1007/s00382-008-0406-6

  • Sedláček J, Lemieux JF, Mysak LA, Tremblay LB, Holland DM (2007) The granular sea–ice model in spherical coordinates and its application to a global climate model. J Clim 20(24):5946–5961. doi:10.1175/2007JCLI1664.1

    Article  Google Scholar 

  • Shevenell AE, Kennett JP (2002) Antarctic Holocene climate change: a benthic foraminiferal stable isotope record from Palmer Deep. Paleoceanography 17(2), doi:10.1029/2000PA000596

  • Stommel H (1961) Thermohaline convection with two stable regimes of flow. Tellus 8(2):225–230

    Google Scholar 

  • te Raa LA, Dijkstra HA (2002) Instability of the thermohaline ocean circulation on interdecadal timescales. J Phys Oceanogr 32:138–160

    Article  Google Scholar 

  • te Raa L, Gerrits J, Dijkstra HA (2004) Identification of the mechanism of interdecadal variability in the North Atlantic ocean. J Phys Oceanogr 34:2792–2807, doi:10.1175/JPO2655.1

    Article  Google Scholar 

  • Thompson LG, Mosley-Thompson E, Dansgaard W, Grootes PM (1986) The Little Ice Age as recorded in the stratigraphy of the tropical Quelccaya ice cap. Science 234(4774):361–364

    Article  Google Scholar 

  • Timmermann A, Goosse H (2004) Is the wind stress forcing essential for the meriodional overturning circulation? Geophys Res Lett 31. doi:10.1029/2003GL018777

  • Toggweiler JR, Samuels B (1995) Effect of Drake Passage on the global thermohaline circulation. Deep-Sea Res I 42(4):477–500

    Article  Google Scholar 

  • Tremblay LB, Mysak LA (1997) Modeling sea ice as a granular material, including the dilatancy effect. J Phys Oceanogr 27:2342–2360

    Article  Google Scholar 

  • Weaver AJ, Eby M, Wiebe EC, Bitz CM, Duffy PB, Ewen TL, Fanning AF, Holland MM, MacFadyen A, Matthews HD, Meissner KJ, Saenko O, Schmittner A, Wang H, Yoshimori M (2001) The UVic earth system climate model: model description, climatology, and applications to past, present and future climates. Atmosphere–Ocean 39(4):361–428

    Google Scholar 

  • Zorita E, von Storch H, González-Rouco FJ, Cubasch U, Luterbacher J, Legutke S, Fischer-Bruns I, Schlese U (2004) Climate evolution in the last five centuries simulated by an atmosphere–ocean model: global temperatures, the North Atlantic Oscillation and the Late Maunder Minimum. Metereologische Zeitschrift 13(4):271–289

    Article  Google Scholar 

Download references

Acknowledgments

We thank the two anonymous reviewers for their comments and suggestions which helped to improve the paper. This work was supported by an NSERC Discovery Grant awarded to L. A. M. and the NSERC/CFCAS-funded Canadian CLIVAR Research Network.

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  1. Jan Sedláček

    Present address: Institute for Atmospheric and Climate Science, Swiss Federal Institute of Technology Zurich, Universitätstrasse 16, 8092, Zurich, Switzerland

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  1. Earth System Modelling Group, Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, QC, H3A 2K6, Canada

    Jan Sedláček & Lawrence A. Mysak

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Correspondence to Jan Sedláček.

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Sedláček, J., Mysak, L.A. A model study of the Little Ice Age and beyond: changes in ocean heat content, hydrography and circulation since 1500. Clim Dyn 33, 461–475 (2009). https://doi.org/10.1007/s00382-008-0503-6

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